v1 · updated 2026-09-04

Developer documentation

11 pages covering 19 public endpoints, OAuth and API keys, signed webhooks, rate limits, error handling, and how to author themes and apps. Every sample here is runnable.

Versions

  • v1released 2026-02-01 · current
  • v0released 2025-06-01 · retires 2026-06-30

Breaking changes get a new version and 90 days' notice. Retired versions keep answering until their sunset date, and say so in a response header long before that.

Building for other merchants? See pricing for plan limits that affect API quota, or contact the team about partner terms. The full feature map lives on features.